System and method for improving orientation data

Abstract

Aspects of the disclosure relate to computing technologies. In particular, aspects of the disclosure relate to mobile computing device technologies, such as systems, methods, apparatuses, and computer-readable media for improving orientation data. In one embodiment, techniques are described for filtering data associated with a first sensor coupled to a computing device, by receiving a signal from the first sensor, detecting a change in a variability of a first signal parameter from a plurality of signal parameters from the signal, and adjusting, based at least in part on the detected change in the variability of the first signal parameter, at least one filter parameter of a filter used to filter a second signal parameter from the signal.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This patent application claims the benefit of U.S. Provisional Patent Application No. 61 / 554,423, filed Nov. 1, 2011, entitled “SYSTEM AND METHOD FOR DETERMINING GRAVITY, LINEAR ACCELERATION, AND ROTATION VECTOR FOR A MOBILE DEVICE,” U.S. Provisional Patent Application No. 61 / 558,994, filed Nov. 11, 2011, entitled GYROSCOPE-AIDED MAGNETIC ANOMALY MITIGATION,” and U.S. Provisional Patent Application No. 61 / 558,966, filed Nov. 11, 2011, entitled “GRAVITY VECTOR BY FUSING ACCELEROMETER AND GYROSCOPE USING A KALMAN FILTER” all of which is incorporated by reference herein in its entirety for all purposes.BACKGROUND[0002]Aspects of the disclosure relate to computing technologies. In particular, aspects of the disclosure relate to mobile computing device technologies, such as systems, methods, apparatuses, and computer-readable media for improving orientation data.[0003]Increasingly, computing devices, such as smart phones, tablet computers, per...

AI Technical Summary

Benefits of technology

This patent describes a system that uses sensors to determine the orientation of a device. The system is designed to be power-efficient and accurate. It can use different sensors, such as accelerometers, magnetometers, and gyroscopes, and it can use separate filters for each sensor. This allows for faster and more accurate results. The system can also be used when the device is stationary and can synchronize timestamps between sensors. Overall, this patent provides a blueprint for developing a precise and efficient system for determining device orientation using a variety of sensors.

Problems solved by technology

However, fusing sensor inputs may also present a unique set of challenges for system integration and limit certain improvements.

Such applications have tight delay requirements along with high accuracy needs.

Known filters used for filtering out noise may comprise static first order filters that have low performance and cannot quickly adapt to the changing noise in the operating environment of the sensors.

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